Drywall & Insulation Contractors
Drywall, taping, plastering and insulation for comfort and energy savings.
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About drywall & insulation services
Drywall and insulation are the layers you never see once a room is finished, yet they decide how warm, quiet, and comfortable that room feels for decades. Insulation slows the movement of heat through walls, ceilings, and floors, while drywall creates the smooth, paintable surface and, critically, part of the fire and air barrier assembly. In most Canadian homes the two are installed as one continuous process: insulation and vapour barrier first, then boarding, taping, mudding, and sanding. When any step is rushed, the symptoms show up later as cold walls, condensation, cracked joints, or visible seams under raking light.
The single biggest variable in an insulation job is the R-value, the measure of thermal resistance. Canadian climate zones call for very different targets, and an attic in a northern zone needs far more insulation than an interior partition wall that exists mostly for sound. A good contractor sizes the R-value to the location within the assembly, not just the room, because exterior walls, rim joists, basement walls below grade, and cathedral ceilings each behave differently. Batt, blown-in cellulose, rigid foam board, and spray foam all reach the same rated R-value by different routes, and each has trade-offs in cost, air sealing, and moisture behaviour.
Drywall itself is deceptively simple. Hanging the board is the fast part; the taping and finishing is the craft. A finisher works to a level system, roughly Level 0 through Level 5, where higher levels mean more coats of compound and more sanding to hide fasteners and joints. Ceilings, high-gloss paint, and walls washed by side lighting demand the higher levels because every imperfection telegraphs through. Moisture resistant board belongs in bathrooms, and specialty products handle mould resistance, abuse resistance, and improved sound ratings where they are needed. Matching the right board and finish level to each room is what keeps walls looking flat and seamless.
Drywall & Insulation services we cover
Batt and roll insulation
Pre-cut fibreglass or mineral wool batts friction-fit between studs and joists. A cost effective choice for standard-depth wall cavities and accessible attic floors, best where framing is regular and cavities are free of obstructions.
Blown-in attic insulation
Loose-fill cellulose or fibreglass blown to an even depth across an attic floor. It flows around wiring and framing to reach a consistent R-value, and topping up an under-insulated attic is one of the highest-return upgrades available.
Spray foam and rim joists
Closed-cell spray foam that insulates and air-seals in one step, ideal for rim joists, cantilevers, and irregular cavities. It resists moisture and adds structural rigidity, though it must be installed by trained applicators to the correct thickness.
Vapour barrier and air sealing
Continuous poly vapour barrier, sealed penetrations, and taped seams that keep warm indoor moisture from condensing inside cold wall assemblies. Done right, this prevents the hidden mould and rot that undermines even a well-insulated wall.
Board hanging and finishing
Hanging drywall to minimize joints, then taping, mudding, and sanding to the finish level a room requires. Includes ceilings, corners, and specialty moisture or mould resistant board for bathrooms and basements.
Repairs and soundproofing
Patching holes, fixing water damage, and reskimming damaged surfaces, plus sound assemblies using resilient channel, acoustic sealant, or dense mineral wool to quiet bedrooms, home offices, and shared walls.
Signs you need a drywall & insulation pro
Cold walls and high bills
Exterior walls that feel cold to the touch, drafts near outlets, or a furnace that runs constantly usually point to missing, settled, or gapped insulation. Adding or topping up insulation restores comfort and eases the load on your heating system.
Cracked or popping joints
Seams that crack, nail pops that reappear, and corners that separate signal poor taping, movement, or trapped moisture. A finisher can retape and reskim, but recurring cracks often mean the underlying cause needs attention first.
Condensation or musty smell
Moisture beading on walls, staining, or a musty odour suggests a failed or missing vapour barrier letting warm indoor air condense inside the assembly. Left alone this leads to mould and rot hidden behind the drywall.
Rooms that never sound quiet
If conversation, plumbing, or traffic carries easily between rooms, the walls likely lack sound insulation or use standard board. Dense mineral wool, sealed penetrations, and specialty board noticeably raise the sound rating of a partition.
What drives drywall & insulation cost
See the full cost guide →Insulation type and R-value
Reaching a higher R-value costs more, and the material matters. Batts are the most economical, blown-in suits attics, and spray foam costs the most because it air-seals and requires specialized equipment and applicators.
Area, access, and prep
Total square footage drives material and labour, but access changes everything. Tight attics, finished spaces that must be opened up, and removal of old or contaminated insulation all add time before any new work begins.
Finish level required
A Level 5 finish for glossy paint or side-lit walls takes several more coats and far more sanding than a basement storage room. Ceilings and high walls needing staging also raise the finishing labour.
Board type and details
Moisture resistant, mould resistant, fire rated, and acoustic boards cost more than standard drywall. Curved walls, tall ceilings, and heavy detailing with bulkheads or archways add cutting, hanging, and finishing time.
Top Drywall & Insulation Contractors
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Concord, Ontario
Toronto's trusted renovation experts since 2009, kitchens, baths, basements & full home remodels across the GTA.
Drywall insulation in the United States
Across the United States, drywall insulation needs vary from one state to the next. From Gulf-coast humidity to northern winters, conditions across the United States vary enough that materials and methods are matched to the local climate.
Typical jobs include board hanging and finishing and batt and roll insulation. State and city requirements vary, which is why hiring locally avoids permit and inspection surprises.
On NeedReno you can find drywall insulation pros throughout the United States, compare quotes in US dollars, and choose a contractor who already works in your state.
How to choose a drywall & insulation contractor
Insulation and drywall are governed by building code, so verify that your contractor pulls the required permit and books inspections where the work is structural, changes fire separations, or involves a basement or addition. Spray foam is a regulated product in Canada: applicators should be trained and certified through a recognized programme such as the CUFCA quality assurance system, and the installed foam must meet the standards referenced in your provincial code. Ask how they will handle the vapour barrier and air sealing, because that detail, more than the insulation brand, decides whether the wall stays dry through Canadian winters.
Confirm the contractor carries liability insurance and, where they employ crew, workers' compensation coverage through your provincial board such as WSIB in Ontario or WorkSafeBC. For the drywall side, ask to see recent finished work under natural light and ask what finish level they are quoting, since a vague quote often hides a lower level than you expect. A dependable contractor puts the insulation R-values, board types, finish level, and vapour barrier approach in writing so there is no ambiguity about what you are paying for.
What to expect from a drywall & insulation project
Assessment and measurement
The contractor inspects the space, checks existing insulation and moisture conditions, and measures each assembly. They confirm target R-values by location and identify any framing, wiring, or ventilation issues to resolve first.
Insulation and vapour barrier
Insulation is installed to fill cavities completely without compression, then the vapour barrier goes up with sealed seams and penetrations. Air sealing at top plates, outlets, and rim joists happens here, before anything is covered.
Hanging the board
Drywall is measured, cut, and fastened to studs and joists in a layout that minimizes joints. Ceilings go up first, then walls, with the correct board type used in wet or fire rated areas.
Taping, mudding, sanding
Joints and corners are taped and coated in successive layers of compound, each allowed to dry before the next. Final sanding brings the surface to the agreed finish level, ready for primer.
Cleanup and priming
The crew removes debris and dust, protects finished surfaces, and often applies a coat of primer that both seals the drywall and reveals any spots needing a final touch-up before painting.
Drywall & Insulation: frequently asked questions
How much does drywall installation cost per square foot?
Pricing is quoted by the square foot and varies with the finish level, ceiling height, and how much taping and sanding the job needs. A simple basement wall costs far less per foot than a Level 5 ceiling under bright light. Because material and access differ so much, the reliable way to know your cost is to compare a few written quotes that specify the finish level.
What R-value do I need for my walls and attic?
It depends on your climate zone and the assembly. Attics generally need the highest R-value in the home, exterior walls a moderate amount, and interior partitions little for warmth but often insulation for sound. Your provincial building code sets minimum targets by zone, and a contractor sizes the R-value to each location. Topping up an under-insulated attic usually gives the fastest comfort and energy return.
Do I need a vapour barrier behind my drywall?
In most Canadian climates, yes, warm-side vapour and air control is essential to stop indoor moisture from condensing inside cold wall assemblies. It is typically a sealed poly sheet or an equivalent approach, and the exact method depends on your wall design and region. Skipping or poorly sealing it is a leading cause of hidden mould, so treat it as a core part of any insulation job, not an extra.
What is the difference between spray foam and batt insulation?
Batts are pre-cut fibreglass or mineral wool that friction-fit into cavities and are the most economical option. Spray foam is applied as a liquid that expands to fill and seal every gap, adding air sealing and moisture resistance that batts cannot match. Foam costs more and must be installed by certified applicators, but it excels at rim joists and irregular spaces where stopping air leakage matters most.
How long does drywall take to finish?
Hanging board is quick, but finishing is paced by drying time. Each coat of compound needs to dry before the next is applied, so a typical room takes several days across taping, two or three coats, and sanding. Larger areas, higher finish levels, and humid conditions extend the timeline. Rushing the drying to compress the schedule is what leads to cracked or shrinking joints later.
Can I add insulation to existing finished walls?
Yes, in many cases. Closed finished walls can be insulated by drilling small holes and dense-packing cellulose or blowing in loose-fill, then patching the openings. It is less thorough than insulating an open wall and cannot always add a vapour barrier, so a contractor will assess whether dense-pack, exterior work, or opening the wall gives the best result for your situation and budget.
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